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Analytical procedure for total mercury determination in fishes and shrimps by chronopotentiometric stripping analysis at gold film electrodes after microwave digestion

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dc.contributor.authorAugelli, M. A.
dc.contributor.authorMunoz, R. A. A.
dc.contributor.authorRichter, E. M.
dc.contributor.authorCantagallo, M. I.
dc.contributor.authorAngnes, L.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Uberlândia (UFU)
dc.contributor.institutionInstituto de Pesquisas Energéticas e Nucleares (IPEN)
dc.date.accessioned2014-05-20T15:21:06Z
dc.date.available2014-05-20T15:21:06Z
dc.date.issued2007-01-01
dc.description.abstractA method for the total mercury determination in fish and shrimps employing chronopotentiometric stripping analysis on gold film electrodes is described. Fish and shrimp tissues were digested using a microwave oven equipped with closed vessels. We developed a microwave heating program which decomposed all the samples employing diluted nitric acid and hydrogen peroxide. The proposed method was validated by analyzing a certified reference material and then applied for different fish species from fresh water and seawater acquired in local markets of São Paulo city, Brazil. The Brazilian legislation establishes 0.5 and 1 mg per kilogram of fish as upper limit of mercury for omnivorous and predator species, respectively. Except for blue shark tissues, the mercury content was situated below 0.5 mu g g(-1) for all the analyzed samples. The detection limit of the proposed method was calculated as 5 ng g(-1) of sample utilizing 5 minutes of electrodeposition (+300 mV vs. Ag/AgCl) on the gold electrode. (c) 2006 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUniv São Paulo, Inst Quim, BR-05508900 São Paulo, Brazil
dc.description.affiliationUniv Estadual Paulista, UNESP, São Paulo, Brazil
dc.description.affiliationUniversidade Federal de Uberlândia (UFU), BR-38400902 Uberlandia, MG, Brazil
dc.description.affiliationIPEN CNEN SP, BR-05508000 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, São Paulo, Brazil
dc.format.extent579-584
dc.identifierhttp://dx.doi.org/10.1016/j.foodchem.2006.02.017
dc.identifier.citationFood Chemistry. Oxford: Elsevier B.V., v. 101, n. 2, p. 579-584, 2007.
dc.identifier.doi10.1016/j.foodchem.2006.02.017
dc.identifier.issn0308-8146
dc.identifier.urihttp://hdl.handle.net/11449/32277
dc.identifier.wosWOS:000241044100018
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofFood Chemistry
dc.relation.ispartofjcr4.946
dc.relation.ispartofsjr1,793
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectmercurypt
dc.subjectfishpt
dc.subjectshrimppt
dc.subjectmicrowave digestionpt
dc.subjectchronopotentiometric stripping analysispt
dc.subjectgold electrodespt
dc.titleAnalytical procedure for total mercury determination in fishes and shrimps by chronopotentiometric stripping analysis at gold film electrodes after microwave digestionen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication

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